Multiple-use machine of boring-mill type.



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A. H. INGLE & A. J, GOSSELIN.

MULTIPLE USE MACHINE OF BORING MILL TYPE.

. APPLIOATION FILED FEB. 3, 1912- Q 1.12%,881 Patented Jan.5,1915.

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APPLICATION FILED .IEB. 3, 1912.

Patented Jan. 5, 1915.

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forefrontv ALPHQNSE J. GOSSELIN, OF ROCHESTER, NEW YORK, ASSIGNORS, BY MJESNE ASSIGNMENTS, T0 LANDIS TOOL COMPANY, 015 WAYNESBORO, PENNSYL- FANIA, A CDEPQMTION OF PENNSYLVANIA.

MULTIPLE-USE MACHINE OF BQRING-MILL TYPE.

me nw- Application filed February 3, 1912. Serial No. 675,255.

To all whom it may concern:

Be it known that we, ARTHUR H. INGLE and ALPHoNsn J. GossELiN, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Multiple-Use Machines of Boring-Mill Type; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

Our present invention has for its'object to produce a new and improved machine for boring, milling, drilling and tapping, slotting and oil groove cutting operations, adapted particularly for use in connection with heavy pieces of work in which the rotary tool carrying element or boring bar is carried in a saddle or casing, which is adjustable vertically relatively to the work table, the saddle containing the operating elements employed for effecting its adjustmentand for rotatin the boring bar at difalso advancing it in a direction transversely of the saddle.

The invention also comprehends in a machine of this character, the provision of means for operating the work support table horizontally and transversely of the bed of the machine and providing in connection with such mechanism means whereby the operator may control from the table the vertical movement of the saddle of the column.

To these and other ends the invention consists in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings: Figure 1 is a front elevation of the machine embodying the invention; Fig. 2 is an end view thereof; Fig. 3 is a sectional view on the line 3"-3" of Fig. 1, showing the out-board bearing for the boring bar; Fig. 4 is a sectional View on the line -:Pet* of Fig. 1, showing the work table in section; Fig. 5 is a plan view of the cross-head on which the work table is mounted; Fig. 6 is a sectional view on the line 6* x of Fig. 5'showing the clutchoperating device controlling the transverse Specification of Letters Patent.

Patented Jan. 5, iota.

movement of the table; Fig. 7 is a sectional bar saddle and the out-board bearing for said bar; Fig. 8 is a sectional view on the line 8*--8 of Fig. 5, showing the, mechanism for operating the clutch shown in Fig. 7 Fig. 9 is a plan view of the bed of. the machine, taken on the line 9"-9 of Fig. 1, the table and out-board bearing being removed; Fig. 10 is an interior view of the saddle, the front of the. latter being removed, as indicated by the section line 10"-10 of Fig. 2, showing the compact arrangement of the inclosed gears and the controlling devices; Fig. 11 is a similar view, part of the gears contained inthe upper part of the saddle and mounted on the cover plate being removed; Fig. 12 is a horizontal sectional view taken .on the line 12 12 of Fig. 2, illustrating in plan view the gears and other devices controlled in the saddle; Figs. 13, 14, 15 and 16, are vertical transverse, sectional views taken respectively on the section lines 13"13", 14"-14",

.tion with those illustrated in Fig. 18 for rotating the boring bar nut at various speeds for drivingthe table for milling operations and for effecting a rapid traverse of the saddle on its support, or the table'on the bed of the machine; Fig. 20 is an end view of the clamping nut employed for holding the spindle to prevent its longitudinal movement when the machine is performing the :fnaillingoperation; Fig. 21 is a sectional view taiten on the line 21 21 of Fig. 1, showing the clamping device employed for preventing the rotation of the boring bar its view showing the internal arrangement of the hubs of a plurality of the gears and a key shaft cooperating therewith; Fig.- 2 1 is an enlarged detail view of the gearing shown in dotted lines in'Fig. 9 employed for operating the driver for the table, saddle and out-board bearing; Fig. 25 is a perspective view of the controlling member of the boring bar feed, and Figs. 26 and 27 are enlarged detail sectional views taken on the lines 26"26" and 27"-27 of Fig. 9.

Similar reference numerals throughout the several figures indicate'the same parts.

In machining certain classes of work, especially where the castings are large and cumbersome, and a plurality of different operations is required on each, the work is facilitated when the several operations can be performed by a single machine, as this obviates the loss of'time required in chucking castings, as one setting or clamping thereof on the work table is suflicient.

-In the machine shown in the drawings, the main object which it has been sought to attain, is the provision of means whereby the necessary vertical movement of the saddie and horizontal movement of'the boring bar, as well as the longitudinal and transverse movements of the work table, may be eflecte'd either manually or mechanically, at different speeds; to arrange these parts compactly and to prevent the possibility of any two different feeds being thrown into operation at the same time; also the provision of automatic safety stops for the saddle, table and boring bar, brought into operation at the extremes of the movements of these parts.

. General construction of the machine. The machine shown as one embodiment of the present invention, comprises the bed or base 1, having on its upper surface longitudinally extending ways 2 on which is mounted the carriage 3 carrying the work table 4, the latter being adjustable transversely of the cross-head, while the carriage is movable from one end of the bed to the other. At

one endiof the bed of the machine is a hollow column or support 5 having a vertical way 6 upon its face, on which is guided the boring bar saddle 7, which is counter-balanced by a weight 8 attached to the flexible cable 9 passing over the pulley 10 and connected to the saddle, as shownparticularly in Fig. 2. Extending transversely through the saddle in a horizontal direction is the boring bar or tool spindle 11, and in alinement therewith is an out-board bearing 12 -movable vertically in a column 13 and adapted to receive the outer end of the spindle or any tool extension which may be applied thereto. The column 13 is movable longitudinally of the base 1 being guided on the ways 2.

Vertical movement of the saddle 7 is accomplished by an elevating screw 14: and a similar screw 15 is provided in the column 13 for effecting a corresponding movement of the out-board bearing 12. The screws 11 and 15 are simultaneously operated by the shaft 16, shown in Fig. 9, extending longitudinally of the bed 1, the screw 14 being revolved, as will be later described, either by hand or power. mechanism arranged in the saddle 7 The work table is moved longitudinally on the bed in one direction or the other by the feed screw working in a nut 18 on the carriage 3. This screw may be rotated by v a hand crank applied to the stud shaft 19 attached to one of two cooperating bevel pinions 20, as shown in Fig. 9, or the shaft may be rotated from the power drive shaft through the mechanism shown in Fig. 21. Extending longitudinally in the bed between the shaft 16 and the screw 17, is the shaft 24 employed for transmitting transverse movement to the table 4, and also for rotating the shaft 16, when it is desired to raise or lower the saddle 7 and the complementary out-board bearing 12 from a position in front of the work table irrespective of here this may be located on the bed of the machine. The horizontal shaft 24- is driven from the vertical shaft 25, extending downwardly from the saddle 7, having a sliding connection with one of a pair of bevel gears 26, connected by gears 161, shaft 160 and gears 162 and 240 by means of which motion is imparted from said shaft 25 to shaft 24. The main driving member is the shaft 27, extending vertically through the saddle 7 and supported in bearings at the top and bottom of the column 5, rotary movement being imparted to said shaft from any suitable source of power, as, for instance, a drive pulley 28, shown in Figs. 1 and 2, the shaft 29 on which it is mounted and the bevel gears 30 connecting the latter with the shaft 27.

Main drive clutch-The various driving mechanism of the machine by which the different operations are accomplished, both in forward and reverse directions, receive their motion through the main drive clutch illustratedin Fig. 17. This clutch comprises generally two bevel gears adapted to be alternately connected to the main drive shaft 27, both of which are in mesh with a bevel pinion on the counter-shaft, which latter will be rotated in one direction or the other. according to which of the-two bevel gears are connected to the driving shaft. In defail the clutch mechanism comprises the bevel gear Wheels 31 and 32, journa-led in the longitudinally through the hubs of tenan bearings-31", 3230f the saddle'l, the hubs-of nuts 31 32, threaded on the extremities of the sleeve 33. The latter rotates with the shaft 27 and is slidingly connected therewith by the key 33*. Surrounding 'the'sleeve 33 and located between the bevel pinions 31 and 32 is a thimble 33*, also movable lonfrom rotation thereon by the key 33. The thimble 33' is provided with recesses in which is pivoted a-rocking member-having at its ends projections or heads 33 and 33 recess in the sleeve 33 and adapted to move the latter downwardlyto bring the clutch members 31 and 31 into engagement,- on to cause it to be operated upwardly until the clutch members 32 and32 are in engagement. .This operating member is controlled by a shifter ring 34, which maybe adjusted and held in threedifi'erent positions by the co'ciperating member 34 mounted on the longitudinally movable bar 35, adjustedby the main clutch lever'35 (Fig. 1).

It will be observed that each of the bevel gears 31 and 32 is carried in its own bearing on the saddle 7, and that .the thrust 35 which serves to lock the sleeve 33 to either of these gear wheels, is borne entirely by the gear wheel itself, obviating any strain 'or distortion on the shaft 27, or interfering in any way with itsfree movement.

The counter-shaft controlled by the clutch mechanism which may be alternately rotated in opposite directions, is indicatedby A, and carries the bevel pinion A meshing with the two gear wheels 31 and'32. From.

this shaft A by means of intermediate gear ing and speed change devices, movement in forward and reverse directions is applied to the boring bar 11, and also to the feed device employed for advancing and retract ing it. i

Boring bar operating mechanism.-The boring bar 11 extends transversely through the lower portion of the saddle 7 and at opposite sides of the latter. It is journaled in suitable bearings 36 and 37 which are preferably adjustable in the housings 36 and 37, both of which are detachably connected to the side walls of the saddle 7, by means of bolts 37. Surrounding the boring bar the inwardly projecting collar of the bearing housing 36", and also in thebearing block 38*. intermediate the bearingsprevt ously-mentioned. Thissleeve 38 carries two gitudinally on the sleeve 33 and prevented and at its center a projection 33 fitting a ;ing pinion A normally coiiperating with and preferably separated slightly therefrom is a sleeve 38 j ournal'ed at its forward end in.

separated gear lwhee'ls 38", 38- which are freely revol-uble on the sleeve, but are adapted to be alternatelylocked thereto by the clutch member 39, which is keyed to the sleeve 38 and to the boring bar 11 by the keys 39*. The ends-of the clutch member 39 and-"the proximate faces-of the gear wheels 38 and 38 are provided with cohperating clutch teeth (-as shown in Figs. 10,11 and 18) and the clutch member 39 is adjusted bythe oscillation ofthelever 39 on theexterior of the saddle 7, said lever being connectedby the short shaft 39 (Fig. 13) with the crank 39, carrying the member 39 fitting the annular groove in the clutch member.

Between --the countershaft A and the gear wheels 38 and 38 there are arrangedtwo shafts B and C, containing a multiplicity of cooperating tight and loosegear wheelsp through the coiiperativeaction of which different speeds of rotation may be imparted to the boring bar' 11. This gearing has been arranged to provide a great variety of speeds; to position it in a compact manner, and also to permit one of the main objects of the invention to be carried out, namely,to prevent the accidental selection and the throwing intooperation at the time of those gears which will produce two different speeds.

The shaft B has rigidly connected to it three gear wheels B, B and B and it is also provided with'a smaller pinion B. On

the shaft A are pinions A and A which are normally free to rotate in mesh with the gear wheels B and .B respectively. The central part of the shaft A is angular in cross-section and mounted thereon is a slid- 106 the gear wheel B and having at the opposite ends of its hub dental clutch teeth adapted to coiiperate with similar teeth on the pinions A, A for the purpose of alternately locking these to the shaft A. It will be noticed that when the pinion A is in either of the positions just mentioned, it is out of engagement with the gear wheel-E.

The means for adjusting the selective pinion .A comprises the finger on the rack bar a ..(Figs.-10, 11 and 18), which is shifted laterally on the. guide rod a by means of the gear segment a on the shaft a rotated by the crank arm at on the exterior of the. saddle (Fig. 14).

On the shaft C rotates the gear wheel- C meshing with the pinion B and also rotates the pinion C meshing with the gear wheel B and between these parts is located the clutch member C keyed to the'shaft C, and adapted when movedtoward the left to lock the gear wheel 0 to said shaft, and

when moved in the opposite direction to lock the pinion C in engagement with the shaft (3- he1-e its=hnemb Cf, hee ath noroperated .in Figs. 16 and mal position, as shown in Fig. 18, permits the gear wheel and the pinion with which it coiiperates, to rotate freely and the shaft 0 to remain stationary. When it is desired to rotate the shaft C the clutch member is by oscillating the lever C outside of the saddle 7. The shifting member cooperates with the clutch C illustrated particularly in Fig. 14,,and indicated by C, rocks on a pin C and has a segmental gear connection C (Fig. 11) with the shaft C to the outer end of which the operating lever C is attached. The shaft C also has rigidly connected to it, by means of the key C the gear wheel 0 and the pinion CHthe former cooperating with the gear wheel 38, and the latter meshing 38".

By the arrangement of the parts described, it will be observed that to obtain the desired speed of rotation of the boring bar, the operator first adjusts the sliding pinion A by means of the lever A into one of three positions, and subsequently moves the clutch C by means of the handle G into either of two positions. It will be remembered that the forward 'and reverse direction of the counter-shaft A is determined by the position of the main clutch mechanism controlled by the handle 35.

The longitudinal feeding movement of the spindZe. The rear end of the spindle 11 is provided with a coarse screw thread, as shown, in which feeds the corresponding threads Within the nut 40, held against longitudinal movement by the annular shoulder 41 engaged between bearings 41 and 41 the former resting against a shoulder and the latter being adjustable by a nut 41 arranged within the bearing housing 37. The nut 40 is also journaled in a removable section or' block 42, detachably mounted in the wall of the saddle and carrying the studs 43 supporting the pinions 14, which mesh with the gear teeth formed upon the inner end of the nut 40, indicated by 40 The inner end of the nut 40 is adjacent the outer end of the sleeve 38 and a differential gearing connection is provided between these parts, so that the feeding movement of the boring bar 11 may be controlled.

relatively to its rotary movement. To this end there is mounted on the sleeve 38 the gear wheel 45, which may be :termed the' spindle advancing gear wheel, which is rotated by the change speed gear mechanism, shown particularly in Fig. 14, which will be hereafter described, the gear wheel 45 meshing with the gear wheel M of said ifigure. The gear wheel 45 carries which mesh with the gear teeth on the end of the sleeve 38, and are supported upon the studs 47. J ourna'led-on the sleeve 38 between the gear wheel 45 and the bearing 42 with the gear Wheel the pinions 46,.

is the drum-gear 48 having the two internal rows of teeth 44, 46, co'ciperating respectively, with the sets of pinions 44 and 46. From this arrangement of the parts it will be seen that the feed or advance movement of the boring bar is determined by the speed of rotation of the nut 40'relatively to the sleeve 38 and the bar, or the bar itself, since said sleeve and bar are connected by the keys 39*. If the nut and sleeve rotate at the same speed, there will be no advance move ment of the bar, but if the speed of the nut is increased or decreased, the bar will be advanced or retracted. Consequently it follows'that if the bar is clamped against rotation and the nut revolved, the bar will be caused to reciprocate, and if appropriate tools are secured thereto, planing or slotting operations may be performed. Also, if

the bar is clamped against longitudinal movement, it may be equipped with a milling tool and work of this character performed, the work pieces being moved relatively to the tool by reciprocating the work table. These operations, however, will be taken up in detail more fully hereafter.'

The mechanism for driving the nut 40 atvarious speeds, also comprises means for operating it either manually or by-power, and associated with said mechanism are other instrumentalities, whereby the work table 4 may be moved lengthwise of the bed, the saddle 7 adjusted-vertically, and all of these operations performed either manually or driven by power at any one of numerous different speeds, or more rapidly by special traverse mechanism, which latter is adapted for roughly adjusting the saddle, table and boring bar to approximately their desired positions.

The various gears employed for carrying out the movements generally referred to above, is shown diagrammatically in Fig. 19, which should be considered in connection with Fig. 18. In the last mentioned figure, it will be observed that on the shaft B two gear wheels B and B are-mounted, the former meshing withthe pinion C on the shaft C, the latter being driven from said pinion by an intermediate idler B. The gear wheels B and B are provided upon their adjacent faces with recesses having gear teeth, adapted to form clutch connection with the teeth of a broad-faced gear 50, which meshes with a similar gear wheel 51 on the shaft E (Fig. 19), imparting movement to the latter either in a forward or reverse direction according to which of the two gear wheels B or B it may engage. The broad-faced clutch gear 50 may be shifted laterally in either direction by the lever 50 arranged near the upper left hand portion of the saddle 7, said handle being attached to the shaft 50", provided at its inner-end with-fingers engaging the annular anaaeei groove in the face of'the gear wheel, as-

l shown-in dotted lines in Fig. 13.

perforation in which is fitted the shaft E having keys e sliding in the grooves provided in said gear wheel, and adapted to be moved longitudinally by a toothed sector E cooperating with the annular teeth on the end of said shaft.

for oscillating it, comprising the shaft E and the operating handle E. J ournaled on the shaft E is a plurality of gear Wheels E E, E and E, of increasing diameters, any one of which may be selected by the longitudinal movement of the shaft E, which is provided with two small keys e. The form of connection between the shaft E and these gear wheels is illustrated in detail in Figs. 22 and 23, where it will be seen that each of the gear wheels is provided at its opposite side with shallow central recesses, and with equally. spaced transverse notches connecting said recesses, the latter being of sufficient depth. so that spaces are provided between adjacent gears sufficient to accommodate the keys 6, the recesses forming ways through which said keys may be slipped in moving the shaft longitudinally'in the seieilce tion of the different. gear wheels. notches before referred to constitute a plurality of key Ways in each gear wheel, and the recesses between the gear wheels permit the keys e to be first disengaged from one gear wheel before. interlocking with the' next succeeding one. From the mechanism thus far described, it will be seen that there is provided two gear wheels B and B rotating continuously in opposite directions, and from which motion may be alternately imparted by a shifting of the broad-faced clutch gear .50 by means of the handle so that movement in either forward or reverse direction may be transmitted through the gear wheel 51 and shaft E to anyone of the gear wheels E E, E and E according to which one of these gears is selected by the longitudinal movement of the shaft E through the handle E In the train of gearing there is interposed the detachable hand operating mechanism and a suitable clutch mechanism by which the various adjustments of the machine may be accomplished by a manual movement of a hand wheel 52. Arranged parallel of the shaft E is another shaft F carrying a cone of gears rigidly attached thereto, indicated by F, F F and F, each of which cooperates with one of the several gears on the shaft E, the arrangement being such that the shaft F will always be rotated with the shaft E, the speed of the former depending entirely upon which of the several gears on clutch member F The sector is illus- I trated in two positions in Figs. 10 and 15,

and in the latter figure is shown the means" said shaft have been selected. The outer with a tapering surface which cooperates with a similar surface formedj'on the cone secured to the shaft F by a key F". This clutch member is provided with screw threads engaged by a nut F by means of which it'is given a. longitudinal movement on the shaft F to cause it to engage and disengage the hand wheel 52, said nut being held againstth'e endofthe shaft F by the bolt head and washer F The unscrewing of the nut causes the clamping member to move inwardly and to be locked against the hand wheel, while its rotation in the opposite direction will release it from the hand Wheel and permit the latter to remain stationary.

The feed jack shaft G carries a gear wheel G free to rotate thereon and adapted to be-locked to the shaft by a clutch Gr attached thereto by keys 9 operable from the exterior of the saddle by a lever G on a stud 9-, carrying the shifting fingers 9 (Fig. 13.) The shaft G further supports a gear wheel G meshing with a pinion M through which the gear wheel 45 is driven to operate on the planetary driving mechanism which advances the boring bar. A rotary movement is imparted to the gear G by a system of back gearing through which additional speed adjustments may be obtained. The back gearing further comprises the clutch pinion. G' on the shaft G and the back shaft H on which is keyed the gear H meshing with the pinion G Also rotating on the shaft is a pinion H integral with the gear H and another pinion H The gear H and the pinion H are separated and on their proximate faces are clutch teeth adapted to cooperate with similar projections at the opposite sides of the clutch H which is secured to the shaft H by keys k. This clutch may be adjusted either in the right or left hand directions by the lever H exterior of the saddle connected to fingers H located within the saddle (Fig. 17 cooperating with the annular recess in said clutch. The pinion H meshes with the gear wheel G and the gear wheel H cooperates with the pinion Gr integral with the gear wheel G, which latter engages the that the nut for advancing the boring bar may be rotated at any one of a great variety of speeds, motion being imparted to the gear wheel of the planetary system (Fig. 18).,when the clutch G (Fig. 19) is shifted to lock theygear'G to the shaft G,

and the clutch G is shifted to lock the pinion G to the shaft G, and the clutch H is shifted to connect in the back gear mechanism. Now, if the clutch member F 5 is in engagement with the hand wheel 52, the source of power rotating the shaft F will be communicated to the boring bar nut 10. However, if the clutch members are disengaged, then the-hand wheel 52 may be operated manually to project or retract the boring bar as desired.

In addition to manually adjusting the boring bar the hand wheel 52 mayalso be used to adjust the saddle vertically on its support, and to move the work table 1 crosswise of the bed of the machine, but further mention of these functions of the hand wheel will be omitted until the table operating mechanism has been described.

Rapid traverse and milling m0oement.

ing bar for performing milling operations,

' as will be fully described.

On the shaft G are two freely revoluble pinions Gr and G, which for convenience in description will hereafter be referred to as the rapid traverse pinion and the milling pinion, respectively. The rapid transverse pinion is rotated continuously by the idler X (Fig. 15), pinion l3 on shaft B and gear wheel A rigidly connected to the shaft A. This train of gears, it will be observed, is such that quite a rapid movement is 1mparted to the rapid transverse pinion G which will also be communicated to shaft G when the clutch G is' operated in a direction to lock said pinion to the shaft. The pinion G is likewise adapted to be locked to the shaft G by the dental clutch G which will then be disengaged from the back gearing employed for rotating the spindle nut 40, so that no advance movement of the spindle can take place. Beneath the milling pinion G and meshing therewith is another pinion 1 attached to a bevel pinion I meshing with a similar pinion 1 attached to the shaft 25. The latter, as has been before described, extends downwardly from the saddle 7 to the pair of bevel pinions 26.

(Figs. 9-2 1) for the purpose of effecting rotation of the horizontal shafts 16, 17 and I 24, motion being transmitted thereto as follows: The short shaft 160 is rotated by a pair of gear wheels 161, driven by the bevel gears 26, and carrying 'the shiftable pinion 162 adapted to engage either the gear 240, or gear 17, on shaft 17.

Within the cross-head 3 of the work table, surrounding the shaft 24 and carried in separate hearings on the saddle, are the pinions 24" nd 24, between which is arranged a clutch member 24: which is keyed to the shaft. The ends of the clutch member and the adjacent faces of the two pinions are provided with coiiperating clutch teeth, permitting each pinion to be alternately clutched to the shaft, and as the clutch member itself rotates with the shaft it is provided with annular ridges, or teeth, with which an adjusting pinion J (Fig. 7 cooperates, the latter, in turn, being rotated by longitudinal movement of a rack J (Fig. 8) which is under the control of the operator, who raises or lowers the operating handle J (Fig. 6) connected by the link J (Fig. 1) to the crank arm J on the rock shaft J carrying at its inner end the crank arm J attached to the rack bar J.

The longitudinal movement of the table in opposite directions is arrested by stops which may be adjusted relatively to each other to control the longitudinal movement of the rod, arranged parallel to and between the shafts 16 and 24:. One of these stops is indicated by 164: and the other by 165, (Fig. 9), the latter being in the form of a lever journaled on a collar 166 on the shaft 24, and coiiperating with a projection 167 on the rod. 163. This rod is supported in bearings at the ends of the bed 1 and may be shifted lengthwise by a segmental rack 168 operated by a crank arm 169. The shifting of the arm controls the movement of the sliding pinion 162 with which the rod is connected by an arm 170.

The pinion 24: engages carrying the bevel pinion K which imparts movement to the bevel pinion K slidingly connected by a key to the table adjusting screw K The latter is threaded in the stationary nut K on the saddle and its rotation therein causes the table 4 to be moved backwardly or forwardly, as will be understood.

, The pinion 24 meshes with the pinion 16 on the shaft 16 which forms the driving connection between the elevating screws 14: and 15 of the saddle and the out-board bearing. In Fig. 9 the shaft 14 is also shown connected by a pair of bevel gears 14 to the pinion 14 meshing with the pinion 16" on the shaft 16, the latter being connected to the screw 15 by a pair of bevel gears 15.

tends upwardly (Fig. 16) through the nut The elevating screw 14 of the saddle exthe gear wheel K l aiaaeai 14 held securely in the boss 7 on the rear of the-saddle, and'it may be manually rotated within the nut by the bevel pinion 14 journaled in said boss and keyed to' the screw. This pinion may be rotated by movement imparted to a similar pinion 14 on the shaft 14: equipped with a hand wheel 14 i For effecting the rapid adjustment of the saddle in a vertical direction, or of the table horizontally, either longitudinally or transversely of the bed, the clutch gear Gr (-Fig. 19) is adjusted into"engagement with the continuously rotating rapid traverse pinion G and then the clutch G moved into engagement with the milling pinion G ,whereupon the shaft 25 is revolved. Motion being communicated to the shaft 24:, the adjustment of the table lengthwise of thebed is effected by movement of the handle 169 to move the pinion 162 into engagement with the gear 17 to rotate the screw 17 or, if transverse movement of the table 4: is desired, the clutch 24 (Fig. 7 is moved into engagement with the pinion 24; whereupon the screw K is rotated. If, either before or after the table adjustment has been effected,

it is desired to change the position of the saddle 7, the clutch 24 is locked in engagement with the pinion 24 when the rotary movement of the shaft 16 will drive the screws 14 and 15 carrying the saddle and the out-board bearing vertically. The initial direction of rotation of the shaft 25 to effect the movement of the parts in a detion of rotation imparted to the gear wheel A The vertical movement of the saddle is arrested by a tripping device such as that shown in Fig. 15*,comprising blocks GO attached .to the face of the column 6, and having the inclined surfaces 60* cooperating with the crank arm 6O on the inner end of the shaft 35 which controls the shifting of.

- I 'tudinal movement when it is being used for 55 milling work. These clamps are arranged within the outer end of the bearing 37 in the socket provided to receive them, where they are secured by a nut, within which is journaled an annular sleeve having upon its inner end a flange 70*, surrounded by aband 80, which latter may be tightened by clamp screw 80 The sleeve 70 is provided with a key 70 fitting-the longitudinal slot the nut 70, will prevent longitudinal move-- ment of the bar. On other occasions, when longitudinal movement of the boring bar is desired without reciprocatory movement, the split sleeve is loosened and the clamping band 80 tightened bythe nut 80. a

The automatic arresting of the boring bar feed.In a machine of this character, it is very desirable that means he provided to automatically arrest the boring bar before it has reached'the limit of its movement in any direction. As one arrangement of the parts which may be used for carrying out this feature of the invention, there is employed a. precision screw M attached to the pinion M driven by the gear wheel G, the

rotation of said pinion and the pitch of the thread being suchthat the sliding controller block M threaded on said screw will be caused to traverse forwardly and backwardly a distance of a few inches in proportion to the greater lengthwise movement of the boring bar through a distance measurable in feet. The controller block M shown in detail in Fig. 25, is provided with a lengthwise slot m, each end of which is flared or ll-shaped, as indicated by m, m

forming cam surfaces which cooperate with the pins m and m at the ends of the lever M serving to straighten the latter on its pivot m (Fig. 10). The bearing of the lever m is arranged in alinement with the shaft m carrying the handle H which lat- .ter operates the fingers H (Fig. 16) for throwing the feed back gear clutch H (Figs. 10 and 19). The operating fingers H are arranged as part 'of a lever M, which has a jointed or toggle connection with an arm M attached to the arm M Now, when the controller block M is in proper position, the back gear feed clutch H can be moved in one direction or the other, so that a rotary movement is imparted to the boring, bar nut 40, and the rotation of the lat- 1 ter may continue until the controller block M has traversed the screw m in one direction or the other, and its bevel surfaces m, m are brought into engagement with one of the other of the pins m we, when the toggle levers M", M will be straightened and the clutch member H disconnected from either.

the gear wheel H or the pinion H". Face plate.This part of the machine i "mounted upon thebearings 36, indicated by 0, having arearwardly extending ove'rhanging flange 0 provided with the interior teeth with which cooperates the pinion O ing in alinement with the shaft C, the'latter-and the end of the stud'being provided with interlocking clutch teeth which will cooperate when studshaft is moved longitudinally by theshifting arm 0 carrying the eccentric pin 0 (dottedlines in Fig. '10) fitting the groove 0" of the stud shaft 0' (Fig. 18).

W e claim asour invention- 1. a machine ofthe character described,-the combination with a bed, a'vertibalcQlumn, a work table movable along the bed and a saddle movable vertically on the column,' a vertical drive shaft, a screw for-adjusting the saddle, a driven shaft leading downwardly from the saddle and detachable driving connections in the saddle between the driveand the driven shafts, of two shafts leading one from the screw and one from said driven shaft beneath the table, and by devices 'carried by the table.

for connecting and disconnecting said shafts to effect vertical movement of the saddle from the table;

' 2.- In a machine .of the character described, the combination with 'a bed, a-cola work table on the bed and a saddle guided on the column, a vertical drive shaft onthe column, an elevating screw for adjusting the saddle, and a driven shaft depending from "the saddle, of twoshafts extending beneath the work table and connected one to the screw and the other to the drivnshaft and clutch connection between said two shafts carried on the table for controlling the vertical adjustment of the saddle from the-table, of driving connections between the drive shaft and the depending driven shaft embodying a main clutch'carried on the saddle and movable longitudi-. n'ally of'the drive shaft, a main operating member for actuating the clutch, and stops on the column cooperating with said memto automatically disconnect said clutch.

- 3. In a boring machine, the combination with a saddle, a toolbar carried thereon, means for rotating the bar and devices' for moving the bar longitudinally, of change spee'd driving mechanism, embodying a jack shaft, a difi'erentially driven gear wheel and a rapid traverse gear wheel carried on said shaft and both driven at different speeds-by the change speed driving mechanism, an operating connection between the jack shaft and the devices for moving the bar longitudinally and a clutch adapted to'alternately cooperate with the two gear wheels to lock one or the other of them to the jackshaft.

atool'bar carried on the saddle, means-for rotating the bar, and devices for moving it longitudinally and means for raising and her at the limits of movement of the saddle the sleeve.

, 4:. In a boring machine, the combination with a column,a saddle adjustablethereon,

lowering the saddle, of a main drive shaft change speed= driving mechanism operated thereby'and embodying a jack shaft, a loose gearlwheel thereon for operating the devices for longitudinal movement of the tool bar and a second gear wheel for actuating the means fornmoving the saddlev also loosely mounted on the jack shaft, a di'liercntially driven gear wheel and a rapid traverse gear wheel also carried on said shaft and rotated by the change speed driving mechanism and the main drive shaft respectively, a clutch for; alternately, engaging the differentially driven gear wheeluand the rapid traverse gear wheel to secure them to the jack shaft and other means for alternately locking the first' two mentioned'gear wheels to the jack shaft to efiect adjustmentof the saddle or the longitudinal movement of the tool bar either at a selected rate of travel or by the rapid traversexzh 5. In a boring machine, the combination with'a bed, a work table thereon, a column and a saddle movable vertically thereon, a main-drive shaft, a driven shaft extending downwardly from the saddle and means for operating the table relatively to the bed adapted to beactuated by said depending shaft, atool bar carried by the saddle, means for rotating the bar and devices for reciproeating it, of change speed driving mechanism carried in the saddle embodying a jack shaft, two loose gear,- wheels thereon, one connected to the bar reciprocating devices, the other to the dependingshaft, a second pair of gear wheels loose on the jack shaft, one' rotatedby the change speed mechanism andthe-otherby the main drive shaft, two clutch wdevices for cooperating with said pairs of gears for locking one or the other of each pair to the jack shaft.

6. In 'a' mechanism of the character 'described, the combinationwith a saddle,bearings therein, 'a sleeve journaled in the bearings: a borlngwbar. passing through said sleeve and-1n driven engagement therewith,

and separated gear'wheels of difi'erentdiam- I eters journaled 0n the. sleeve, of change speed driving devices continuously rotating:

both of said gear wheels and means for operatively connecting either gear wheel to 7 In a machine of the character described, the combination with a saddle.bearings therein, a boring bar, a sleeve thereon and in driving engagement therewith journaled in the bearings, and driving devices lit ing the shaft to the anteater 9. In a boring mill, the combination with a chan e s ,eed gearing comprisin a counter shaft aiid a gear wheel journaid there on, a rapid traverse pinion also. journaled on said shaft and a clutch for alternately connecting the shaft to the gear wheel or pinion, of a borin bar and devices for advancing or'retractmg it driven by the counter shaft. I

10. In a boring mill,the combination with change speed gearing comprising a counter shaft and a gear wheel journaled thereon, a rapid traverse pinion also journaled on said shaft and a clutch for alternately connectgear wheel or pinion, of a boring bar, differential driving devices for advanclng or retracting it comprising a primary driving pinion arranged on and driven by the counter shaft.

11. In a borin mill, the combination with change spee gearing, comprising a counter shaft and thereon, a rapid traverse pinion also jou naled on said shaft, and a clutch for alternately connecting the shaft to the wheel or pinion, of a boring bar, diflerential driving devices driven by the counter shaft and acting to advance or retract the boring bar, and mechanism for rotating the'bar at difierential speeds independently of its longitudinal movement.

12. In a boring machine, the combination with a boring bar, two sets of difierential driving mechanisms both selective for difl'erent speeds, one for rotating the bar and the other for reciprocating it, of a driving shaft rotating continuously in one direction, a driven shaft impartin movement to both of said mechanisms and driving connections between said driving and driven shafts for operating the latter alternately in opposite directions. 2

13. In a boring machine, the combination with a driving shaft, a driven shaft and forward and reverse driving connections between said shafts, of a boring bar, two sets ofvariable speed driving mechanisms both operated by the driven shaft, one rotating the boring bar, the other reciprocating it, and independentlyv operable clutch connections between said mechanisms and the bar.

14:. In a boring mill, the combination with a driving shaft, a driven shaft and reversible driving connections between said shafts for operating the driven shaft alternately in opposite directions, of a boring a gear wheel ournaled gear .set of normally idle bar, a revoluble nut for reciprocafing it a rotary member for driving the bar an a clutch between said member and the bar and two sets of variable s eed driving devices both actuated by the iven shaft, one rotating said nut the other driving said rotating member.

In a boring mill, the combination with a driving shaft, a driven shaft and detachable driving connections hetweeen them, of a boring bar, a revoluble member for rotating it, a nut for reciprocatin the bar and means for rotating it, a set 0 variable speed driving gears actuated by the driven shaft for imparting movement to said revoluble member, a second set of variable speed driving earsalso actuated hy the driven shaft an imparting movement to the nut rotating means, said second set of driving gears comprising a counter shaft on which one of the drivlng gears is jour naled, a continuously rotating rapid traverse pinion and a clutch for alternately connecting said driving gear or pinion to the counter shaft to permit the latter to be drivgn either at varying speeds or at high spee 16. In a boring mill the combination with a bed, a movable work table thereon and driving devices for reci rocating it, a boring bar, bearings there or, a rotating element for rotating the bar, means for reciprocating it and a main drive shaft, of a main set of differential driving gears for imparting varying speeds of rotation to the rotating element, a second set of speed change gears, a counter shaft, a continuously rotating rapid traverse pinion and detachable connections between the counter shaft, said pinion and said second set of gears, a third set of normally idle change speed gears adapted to be rotated by the counter shaft to drive said bar reciprocatgears and the table reciprocating devices.

17. In a boring mill, the combination with a bed, a movable work table thereon and driving devices for reciprocating it, a boring bar, bearings therefor, a rotating element for rotating the bar, a nut for reciprocating it and a main drive shaft, of a main set of differential gears for imparting varying speeds of rotation to the rotating element, a second set of speed change gears, a counter shaft, a continuously rotating rapid traverse pinion and detachable connections between the counter shaft, said pinion and said second set of gears, a third change speed gears adapted to be rotated by the counter shaft to drive said bar reciprocating means, comprising apinion journaled on the shaft an 7 ing devices and a clutch member idler pinion also carried loose on the shaftfor imparting movement to the table drivfor alternately connecting the counter shaft to either the table'drive idler or to the drive pinion it, and devices for reciprocating the bar, a

speed driving mechanismoperating the bar rotating member, a counter shaft, a continu- 1 shaft and adapted to impart movement to ously rotating rapid traverse pinion thereon and a driving pin on also journaled on the the table and elevating screw driving de-' vices, a secondset of change speed driving devices comprising a rotating member journaled on said shaft, a third set of change speed driving devices adapted to operate the bar reciprocating devices embodying a pinion journaled on the counter shaft, a clutch for connecting the counter shaft either with the rapid traverse pinion or the rotating member of the second set of change speed devices and a clutch for connecting to said shaft either the table driving pinion or the loose pinion of the third set of change speed driving devices. 19. A machine of the kind described, comprising a saddle, a face plate and a tool bar carried thereby on separate bearings with the tool bar passing through the face plate and mounted for longitudinal movement, a common prime driver extendin transversely of the tool bar, change spee connections from said prime driver for rotating the tool bar at a relatively high speed, and other connections for rotating the face plate at a rate differential to that of the tool bar.

20. A machine of the kind described, com-g prising a saddle mounted for vertical adjustment, atool bar horizontally mounted therein for endwise movement, a face plate mounted on separate bearings of said saddle,

boring bar jourjournaled therein,

the way 1n moving it longitudinally,

' inflated tions consisting in a shaft extending in parallelism with the tool bar connectedthereto by change gears, and there being a pinion in endwise alinement with said shaft in driving engagement with said face plate and having provision to be clutched to or unclutched from said shaft at will.

21. In a boring mill, the combination with a frame piece having a bearing, a boring bar and provided with a key way, of mechanism for rotating the bar'and other independently operable devices for moving it longitudinally, a member revolubly jonrnaled on the bearing, a key fitting the bar and a clamp for securing said member to prevent its rotation and the rotary movement of thebar when the latter is being operated by those devices employed for moving it longitudinally.

22. In aboring mill, the combination with a frame piece having a bearing, a boring bar journaled therein, and provided with a key way, of mechanism for rotating the bar and other independently operable devices for a sleeve having an annular portion journaled between shoulders on the bearing, a key carried by the sleeve and fitting'the way 1n the bar, means for clamping the sleeve to the bar and means for clamping the sleeve to the bearin '23. A machine of the kind describe comprising a tool bar mounted for rotation and endwise movement, driving connections for imparting both said movements, or for rotating the tool bar without endwiseimovement at will, and end thrust means adapted to be optionally brought into operation when the tool bar is to be rotated without endwise movement for receiving the end thrusts thereon.

ARTHUR H. INGLE. ALPHONSE J. GOSSELIN.

Witnesses:

MAIDA H. SNYDER, ALBERT J. GLINST. 

